[ENHANCEMENT] Custom headers finally coming to ACC7.4

HTTP headers enable the client and server to exchange additional information within an HTTP request or response. Currently, custom headers are intercepted by nlsrvmod Apache module and stripped. I submitted an enhancement request to implement this feature back in March 2023, and it is now scheduled for inclusion in a forthcoming release, version 7.4, identifiable by the improvement reference "NEO-57557."

In the following example, you can observe that we are making an HTTP call to our custom JSSP page with a customized "Authorization" header, which subsequently gets removed.